201636920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 463320000

約数和(自身を除く): 261683080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 109, 206, 218, 412, 436, 449, 515, 545, 824, 872, 898, 1030, 1090, 1796, 2060, 2180, 2245, 3592, 4120, 4360, 4490, 8980, 11227, 17960, 22454, 44908, 46247, 48941, 56135, 89816, 92494, 97882, 112270, 184988, 195764, 224540, 231235, 244705, 369976, 391528, 449080, 462470, 489410, 924940, 978820, 1849880, 1957640, 5040923, 10081846, 20163692, 25204615, 40327384, 50409230, 100818460, 201636920]

約数ペア:

[(1, 201636920), (2, 100818460), (4, 50409230), (5, 40327384), (8, 25204615), (10, 20163692), (20, 10081846), (40, 5040923), (103, 1957640), (109, 1849880), (206, 978820), (218, 924940), (412, 489410), (436, 462470), (449, 449080), (515, 391528), (545, 369976), (824, 244705), (872, 231235), (898, 224540), (1030, 195764), (1090, 184988), (1796, 112270), (2060, 97882), (2180, 92494), (2245, 89816), (3592, 56135), (4120, 48941), (4360, 46247), (4490, 44908), (8980, 22454), (11227, 17960)]